Fentanyl Takes Title of Deadliest Drug

Fentanyl has overtaken heroin as the deadliest drug in America, with more than 18,000 overdose deaths in 2016 according to just-released final numbers. The relentless spread of fentanyl, whose involvement in overdose deaths has increased by 113% a year since 2013, represents a new front in the opioid epidemic that is seeing users shifting to much more p…